Update Galaxy S3 I9300 to UBBLG5 Android 4.0.4 ICS Official Firmware

Samsung Galaxy S3 I9300 firmwares are now available online. We have covered a number of official firmware tutorials. All these firmwares are usually stock Android 4.0.4 firmware updates released at different countries (and regions). Today, we have Android 4.0.4 UBBLG5 for Galaxy S3 I9300.

This latest I9300UBBLG5 was released by Samsung over KIES for Ecuador. The modem build is ECOBLG3 and the firmware build date is 1st August 2012. This tutorial will guide you how to install Android 4.0.4 UBBLG5 on Galaxy S3. Let’s proceed with the tutorial now.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Make sure you have installed all your USB drivers for the Samsung Galaxy S III to connect it with the computer. Download Samsung Galaxy S3 USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and update Galaxy S3 I9300 to Android 4.0.4 UBBLG5 firmware.